django - 操作系统错误 : [Errno 99] Address not available - sending e-mail from django docker app with gmail smtp

Question

我正在尝试从 docker 中的 django 应用程序发送电子邮件，但出现以下错误:

OSError at /accounts/mail/
[Errno 99] Address not available
Request Method: GET
Request URL:    https://localhost:8000/accounts/mail/
Django Version: 2.2.5
Exception Type: OSError
Exception Value:    
[Errno 99] Address not available

网络服务器日志:

web_1            | OSError: [Errno 99] Address not availableweb_1            | [17/Sep/2019 19:21:35] "GET /accounts/mail/ HTTP/1.1" 500 108369

My environment:Ubuntu 18.04DockerDjango + GunicornPostfix

I have no problem to send an e-mail outside docker, locally. I suppose that there might be a problem with smtp port inside docker, but I don't know how to fix that. I tried with postfix - same error.

View code from django:

from django.core.mail import EmailMessage  # didn't work also with send_mail

def email(request):
    mail_subject = 'Activate your account'
    message = 'test'
    to_email = 'mail@mail'
    email = EmailMessage(
        mail_subject, message, to=[to_email]
    )
    email.send()
    return redirect('index')

我的 docker-compose 文件的一部分。

version: '3.3'

services:
  web:
    build: ./app
    command: python manage.py runsslserver 0.0.0.0:8000
...
    ports:
      - 8000:8000
      - 587:587
      - 25:25
    env_file: .envdev
...
  postfix:
    image: juanluisbaptiste/postfix:latest
    expose:
    - "25"
    env_file:
      - .envpostfix
    restart: always
    volumes:
     - "/etc/localtime:/etc/localtime:ro"
...

Docker .env 文件:

EMAIL_BACKEND=django.core.mail.backends.smtp.EmailBackend
EMAIL_USE_TLS=True
EMAIL_HOST=smtp.gmail.com
EMAIL_HOST_USER=***
EMAIL_HOST_PASSWORD=***
EMAIL_PORT=587

我的后缀设置:

SMTP_SERVER=smtp.gmail.com
SMTP_PORT=587
SMTP_USERNAME=***
SMTP_PASSWORD=***
SERVER_HOSTNAME=127.0.0.1

Answer 1

问题解决了。

我在 django 设置中创建了 MAIL 变量，而不是只保留在 docker .env 文件中。